The Irish mob has been reported in 13 locations within the U.S. Five of them were in Oklahoma, including Tulsa, Catoosa, Norman, Oklahoma City, and the state prison system.

Police say the Irish mob is a big “white only” prison gang, and its members don’t get along with other white gangs.

In September, members of the IMG were involved in a turf war with the Universal Aryan Brotherhood at a private prison in Cushing. Four inmates were stabbed to death in the brawl, the Associated Press reports.

Members of the Irish mob gang, which started in Tulsa in the 1990s, wear shamrocks, Celtics jerseys, and the color green.NewsOn6.com